Sodium Hydroxide → 3-(4-fluorophenyl)-1-(2-methylphenyl)-1H-pyrazol-5-amine

反応式

N[C:2]([C:6]1[CH:11]=[CH:10][C:9]([F:12])=[CH:8][CH:7]=1)=[CH:3][C:4]#[N:5].Cl.[CH3:14][C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=1[NH:21][NH2:22].[OH-].[Na+]>Cl>[F:12][C:9]1[CH:8]=[CH:7][C:6]([C:2]2[CH:3]=[C:4]([NH2:5])[N:21]([C:16]3[CH:17]=[CH:18][CH:19]=[CH:20][C:15]=3[CH3:14])[N:22]=2)=[CH:11][CH:10]=1

参加物

実験手順

To a solution of 3-amino-3-(4-fluorophenyl)acrylonitrile (600 mg, 3.70 mmol) in 1 N HCl (6 mL) was added (2-methylphenyl)hydrazine hydrochloride (558 mg, 3.51 mmol). The reaction was allowed to reflux for 16 h, and then cooled to rt. The resulting mixture was basified to pH 12 by slow addition of 1 N aqueous sodium hydroxide. The precipitate was collected by filtration, and then recrystallized from EtOH/Et2O to afford the intermediate (800 mg, 81%) as a light orange solid. 1H NMR (400 MHz, CD2Cl2) δ 2.20 (s, 3H), 2.14 (br s, 2H), 5.91 (s, 1H), 7.06 (t, 2H), 7.36 (d, 4H), 7.75 (m, 2H). This material was used without further purification.